QUESTION IMAGE
Question
polygons auhs, auhs, and auhs are shown on the coordinate grid.
which sequence of transformations map auhs to auhs?
a translation of ((x,y) \to (x - 4,y - 2)) then a rotation of (90^circ) counterclockwise about the origin.
a translation of ((x,y) \to (x - 4,y - 2)) then a rotation of (90^circ) clockwise about the origin.
a translation of ((x,y) \to (x - 4,y - 2)) then a reflection over the line (y = -x).
a translation of ((x,y) \to (x + 4,y - 2)) then a reflection over the (x)-axis.
Step1: Identify coordinates of AUHS
Take point $A(1,6)$, $U(3,3)$, $H(4,5)$, $S(4,7)$
Step2: Apply first translation $(x,y)\to(x-4,y-2)$
For $A$: $(1-4,6-2)=(-3,4)$
For $U$: $(3-4,3-2)=(-1,1)$
For $H$: $(4-4,5-2)=(0,3)$
For $S$: $(4-4,7-2)=(0,5)$
These match coordinates of $A'U'H'S'$.
Step3: Test 90° clockwise rotation rule
Rotation rule: $(x,y)\to(y,-x)$
For $A'(-3,4)$: $(4,3)$ → no, doesn't match $A''(-5,-3)$
Step4: Test 90° counterclockwise rotation rule
Rotation rule: $(x,y)\to(-y,x)$
For $A'(-3,4)$: $(-4,-3)$ → no, doesn't match $A''(-5,-3)$
Step5: Test reflection over $y=-x$ rule
Reflection rule: $(x,y)\to(-y,-x)$
For $A'(-3,4)$: $(-4,3)$ → no, doesn't match $A''(-5,-3)$
Step6: Correct translation + reflection check
Use translation $(x,y)\to(x-9,y-9)$ is wrong, re-check option 1's rotation:
Wait, correction: 90° counterclockwise about origin on original $A(1,6)$: $(-6,1)$, then translate $(x-4,y-2)$: $(-6-4,1-2)=(-10,-1)$ no.
Re-test option 1 correctly: First translate $A(1,6)\to(1-4,6-2)=(-3,4)$, then 90° counterclockwise: $(-4,-3)$ which is $A''(-5,-3)$? No, wait grid check: $A''$ is $(-5,-3)$.
Wait, correct transformation: First translate $(x,y)\to(x-4,y-2)$ to get $A'(-3,4)$, then 90° counterclockwise about origin: $(x,y)\to(-y,x)$ → $(-4,-3)$. No, $A''$ is $(-5,-3)$. Wait, error: original $A$ is $(1,6)$, $A''$ is $(-5,-3)$.
Calculate translation + rotation:
Let translation be $(x-h,y-k)$, then rotation 90° CCW: $(-(y-k),x-h)=A''(-5,-3)$
For $A(1,6)$: $-(6-k)=-5$ → $6-k=5$ → $k=1$; $1-h=-3$ → $h=4$. So translation $(x-4,y-1)$ no.
Wait option 1: translation $(x-4,y-2)$ gives $A'(-3,4)$. 90° CCW rotation: $(-4,-3)$, which is $(-4,-3)$, but $A''$ is $(-5,-3)$. Wait grid misread: $A$ is $(1,6)$, $A''$ is $(-5,-3)$.
Wait, 90° clockwise rotation on translated $A'(-3,4)$: $(4,3)$ no.
Reflection over $y=-x$ on $A'(-3,4)$: $(-4,3)$ no.
Wait option 4: translation $(x+4,y-2)$: $A(1,6)\to(5,4)$, reflect over x-axis: $(5,-4)$ no.
Wait re-read option 1: translation $(x,y)\to(x-4,y-2)$ then 90° counterclockwise about origin.
Wait $U(3,3)$ → translate to $(-1,1)$, 90° CCW: $(-1,-1)$ no, $U''(-1,-1)$? Yes! $U''$ is $(-1,-1)$.
$H(4,5)$ → translate to $(0,3)$, 90° CCW: $(-3,0)$ no, $H''(-4,0)$? No, $H''$ is $(-4,0)$.
Wait $H(4,5)$ translate $(x-4,y-2)$: $(0,3)$, 90° CCW: $(-3,0)$ no, $H''(-4,0)$.
Wait correct: translation $(x,y)\to(x-8,y-5)$ no.
Wait, 90° clockwise rotation on original $A(1,6)$: $(6,-1)$, translate $(x-4,y-2)$: $(6-4,-1-2)=(2,-3)$ no.
Wait, reflection over $y=-x$ on $A(1,6)$: $(-6,-1)$, translate $(x-4,y-2)$: $(-10,-3)$ no.
Wait, I misread $A''$: $A''$ is $(-5,-3)$. $A(1,6)$ → translate $(x-6,y-9)$: $(-5,-3)$ no.
Wait, correct transformation: translation $(x,y)\to(x-4,y-2)$ gives $A'(-3,4)$. Then 180° rotation: $(3,-4)$ no.
Wait, option 1 is correct? Wait $S(4,7)$ translate to $(0,5)$, 90° CCW: $(-5,0)$ which is $S''(-6,0)$? No, $S''$ is $(-6,0)$.
Wait, $S(4,7)$ translate $(x-10,y-7)$: $(-6,0)$ no.
Wait, error in coordinate reading:
$A$ is $(1,6)$, $A'$ is $(-4,4)$, $A''$ is $(-5,-3)$.
Translate $A(1,6)\to(1-5,6-2)=(-4,4)=A'$, then 90° CCW: $(-4,-4)$ no.
Wait, let's use option 1's transformation on all points:
$A(1,6)$: $(1-4,6-2)=(-3,4)$ → 90° CCW: $(-4,-3)$
$U(3,3)$: $(3-4,3-2)=(-1,1)$ → 90° CCW: $(-1,-1)$
$H(4,5)$: $(4-4,5-2)=(0,3)$ → 90° CCW: $(-3,0)$
$S(4,7)$: $(4-4,7-2)=(0,5)$ → 90° CCW: $(-5,0)$
These points $(-4,-3), (-1,-1), (-3,0), (-5,0)$ match $A''U''H''S''$ (grid misread earlier).
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A translation of $(x,y)\to(x-4,y-2)$ then a rotation of $90^\circ$ counterclockwise about the origin.